diff --git a/nix/module/configuration.nix b/nix/module/configuration.nix
index fe3d312..f8bb56e 100644
--- a/nix/module/configuration.nix
+++ b/nix/module/configuration.nix
@@ -1,8 +1,8 @@
 { hostname }:
 {
   nix = {
+    optimise.automatic = true;
     settings = {
-      auto-optimise-store = true;
       builders-use-substitutes = true;
       experimental-features = ["flakes" "nix-command"];
       substituters = ["https://nix-community.cachix.org"];